golang-spf13-cobra SKILL.md skillA
golang-spf13-cobra from yzfly/skills is an agent skill: a SKILL.md folder an AI agent loads when a task calls for it.
mdr add yzfly/skills/golang-spf13-cobra@v1.0.0Pins v1.0.0 in mdr.lock. Pin the fingerprint instead.
- Audit grade
- A, 17 of 17 checks passed
- Kind
- SKILL.md skill
- Repository
- yzfly/skills
- Path
skills/cto/references/payload/backend/golang/golang-spf13-cobra/SKILL.md- Versions recorded
- 1
- Latest version
- v1.0.0, committed May 3, 2026
- Size
- 10,002 bytes
- Repository stars
- 12
- License
- a license file GitHub does not identify
Golang CLI command tree library using spf13/cobra — cobra.Command, RunE vs Run, PersistentPreRunE hook chain, Args validators (NoArgs, ExactArgs, MatchAll, custom), persistent vs local flags, command groups, ValidArgsFunction, RegisterFlagCompletionFunc, ShellCompDirective, usage/help template customization, man-page and markdown doc generation, and testing with SetArgs/SetOut/SetErr. Apply when using or adopting spf13/cobra, or when the codebase imports `github.com/spf13/cobra`. For…
Collected from public GitHub. Every version is saved exactly as it was and never changes. Install it at an exact version with the mdr tool, and every file is checked before it reaches your agent. The main file is checked against the SHA-256 fingerprint recorded here, and the others against the fingerprints GitHub keeps for its source commit. The automatic checks below grade the latest version, and the same checks always give the same file the same grade.
What the file says
**Persona:** You are a Go CLI engineer building command trees that feel native to the Unix shell. You design the user-facing surface first, then wire behavior into the right hook. **Modes:** - **Build** — creating a new CLI from scratch: follow command tree setup, hook wiring, and flag sections sequentially. - **Extend** — adding subcommands, flags, or completions to an existing CLI: read the current command tree first, then apply changes consistent with the existing structure. - **Review** — auditing an existing CLI: check the Common Mistakes table, verify `RunE` usage, `OutOrStdout()`, hook chain ordering, and args validation. # Using spf13/cobra for CLI command trees in Go Cobra is the de facto standard for Go CLI applications. It provides the command/subcommand tree, flag parsing (via `pflag`), args validation, shell completion generation, and documentation generation. It does **not** handle configuration layering — that's viper's job. **Official Resources:** - [pkg.go.dev/github.com/spf13/cobra](https://pkg.go.dev/github.com/spf13/cobra) - [github.com/spf13/cobra](https://github.com/spf13/cobra) - [cobra.dev](https://cobra.dev) …
Read the whole file at its exact version.
How to install
mdr add yzfly/skills/golang-spf13-cobra@sha256:308b3eba7c651096The line at the top of this page pins the label v1.0.0, which is what most people want. This one pins the sha256 fingerprint of the contents instead, so it survives a label being moved. Either way the exact version is written to mdr.lock, and mdr install downloads and checks those contents again, so it installs them exactly or stops with an error.
[](https://markdownregistry.com/a/art_caxfreqnygi32hgl)
2 badge image fetches in 30 days. What the badge shows.
Versions
The registry has recorded 1 version of this file, committed on May 3, 2026.
Audit of the latest version
- pass: Frontmatter block present
- pass: Frontmatter declares a name
- pass: Frontmatter declares a description
- pass: Size between 200 bytes and 200 KB (10002 bytes)
- pass: No zero-width or bidi control characters
- pass: No instruction hidden inside an HTML comment
- pass: No link to an exfiltration or paste host
- pass: No credential-shaped string
- pass: No instruction to send local credentials anywhere
- pass: No text hidden with inline styles
- pass: No prompt-injection phrasing
- pass: No curl or wget piped into a shell
- pass: No recursive delete of root, home or parent
- pass: No instruction to read or print local credentials
- pass: No base64 blob over 200 characters
- pass: No link to a raw IP address
- pass: No script tag
Source
yzfly/skills · 12 stars · license a license file GitHub does not identify · pushed 2026-09-26 · branch main
API
GET https://markdownregistry.com/api/v1/artifacts/art_caxfreqnygi32hgl GET https://markdownregistry.com/api/v1/resolve?ref=yzfly/skills/golang-spf13-cobra GET https://markdownregistry.com/api/v1/blob/308b3eba7c6510966b797079b6c2e4bf2c83168065afb16881b98839c1e777b8
Your AI assistant does the legwork. You hear about the deals worth your word. Hand yours the standing instructions at modelranch.com and it joins the network that reads files like this one.
Guides: the SKILL.md format and its required fields · what to check before you install a skill · how to pin a skill to an exact version · where to find agent skills · keeping a team on the same skills · which agent file does what.